Step 1: Painting...
Step 2: Making It Shoot...
2 index cards
1 pen that has a hollow inside (barrol)
1 roll of scotch tape
take the 2 index cards and roll them up into a cylinder, you wanna make the index cards have no space in bewteen the pen body. Put the pen's body down the barrol of the nerf gun (in the cross looking thingy). Then make sure you tape it up good. Also make sure that its down all the way in the barrol and air tight. You should be able to place the airsoft bb in down the barrol and shoot. If you have a gap in between, then you want to fill it up with more paper/index cards. This is what you should've made before placing it in the barrol.
Step 3: Making a Scope...
2 round glass peices
2 index card
1 roll of tape
4 small cups
First you need to make the base. Make it out of index cards. The reason i dont tell you how to do it is because i dont know what nerf gun you have. Then take two cups and make holes in each bottom. Make it perfect so it looks good. Take the 2 other cups and make holes in it so the glass will stay in place when you put the scope together. Tape it all up. Paint it or something. There you go! I made my scope different than what i said because i had a scope peices.
Step 4: Adding Distance!!!
To add distance all you need to do is:
Open up the gun
Find the big spring (the one that shoots the gun)
Add 1-4 dimes/pennies/nickels/quaters behind the spring.
Put it together
That will add distance!
Thank ben360 for this last step
Instructable: Ebony & Ivory: A Nerf Strike Mod